grinding valves on M38 A1 possible?
 

The camp I work for has a M38 A1 jeep with low compression. The engine runs
but doesn't have the power to climb our campus roads. We were considering
new rings to increase compression.

Someone told us that the valves on these were too thin to grind and so
putting new rings in was a waste of time. Some one else looked at it and
said the jeep is not a military version although we got it from army surplus
like 30 years ago. I have the data plate in front of me. It looks like six
brass plates were mounted to a large metal plate at one time, now there are
only four brass plates.

Can we grind these valves? Is it better to find another engine to put in, if
so which one?

We use it as a housekeeping vehicle on camp. We have 9-15% grades and snow
in the winter. Our roads are paved and it doesn't go off-road.

Maybe I should be trying to sell this and find a used replacement.

jimo

Re: grinding valves on M38 A1 possible?
 

You have an F-134", the F stands for half the valves are in the
block, like the old flat head, and the other half are in the head
(intakes) like an overhead valve engine:
http://www.apple.queensu.ca/CJ3B/Tech/EngineTips.html If you don't ring
it, then hand lap the new valves in place with the grinding compound:
http://www.autopart.com/TOOLS/TOOLSMAIN/tool/T_2219.htm and tool:
http://www.autopart.com/TOOLS/TOOLSMAIN/tool/T_2222.htm
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Marvin Olive wrote:
>
> The camp I work for has a M38 A1 jeep with low compression. The engine runs
> but doesn't have the power to climb our campus roads. We were considering
> new rings to increase compression.
>
> Someone told us that the valves on these were too thin to grind and so
> putting new rings in was a waste of time. Some one else looked at it and
> said the jeep is not a military version although we got it from army surplus
> like 30 years ago. I have the data plate in front of me. It looks like six
> brass plates were mounted to a large metal plate at one time, now there are
> only four brass plates.
>
> Can we grind these valves? Is it better to find another engine to put in, if
> so which one?
>
> We use it as a housekeeping vehicle on camp. We have 9-15% grades and snow
> in the winter. Our roads are paved and it doesn't go off-road.
>
> Maybe I should be trying to sell this and find a used replacement.
>
> jimo

Re: grinding valves on M38 A1 possible?
 

You have an F-134", the F stands for half the valves are in the
block, like the old flat head, and the other half are in the head
(intakes) like an overhead valve engine:
http://www.apple.queensu.ca/CJ3B/Tech/EngineTips.html If you don't ring
it, then hand lap the new valves in place with the grinding compound:
http://www.autopart.com/TOOLS/TOOLSMAIN/tool/T_2219.htm and tool:
http://www.autopart.com/TOOLS/TOOLSMAIN/tool/T_2222.htm
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Marvin Olive wrote:
>
> The camp I work for has a M38 A1 jeep with low compression. The engine runs
> but doesn't have the power to climb our campus roads. We were considering
> new rings to increase compression.
>
> Someone told us that the valves on these were too thin to grind and so
> putting new rings in was a waste of time. Some one else looked at it and
> said the jeep is not a military version although we got it from army surplus
> like 30 years ago. I have the data plate in front of me. It looks like six
> brass plates were mounted to a large metal plate at one time, now there are
> only four brass plates.
>
> Can we grind these valves? Is it better to find another engine to put in, if
> so which one?
>
> We use it as a housekeeping vehicle on camp. We have 9-15% grades and snow
> in the winter. Our roads are paved and it doesn't go off-road.
>
> Maybe I should be trying to sell this and find a used replacement.
>
> jimo

Re: grinding valves on M38 A1 possible?
 

You have an F-134", the F stands for half the valves are in the
block, like the old flat head, and the other half are in the head
(intakes) like an overhead valve engine:
http://www.apple.queensu.ca/CJ3B/Tech/EngineTips.html If you don't ring
it, then hand lap the new valves in place with the grinding compound:
http://www.autopart.com/TOOLS/TOOLSMAIN/tool/T_2219.htm and tool:
http://www.autopart.com/TOOLS/TOOLSMAIN/tool/T_2222.htm
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Marvin Olive wrote:
>
> The camp I work for has a M38 A1 jeep with low compression. The engine runs
> but doesn't have the power to climb our campus roads. We were considering
> new rings to increase compression.
>
> Someone told us that the valves on these were too thin to grind and so
> putting new rings in was a waste of time. Some one else looked at it and
> said the jeep is not a military version although we got it from army surplus
> like 30 years ago. I have the data plate in front of me. It looks like six
> brass plates were mounted to a large metal plate at one time, now there are
> only four brass plates.
>
> Can we grind these valves? Is it better to find another engine to put in, if
> so which one?
>
> We use it as a housekeeping vehicle on camp. We have 9-15% grades and snow
> in the winter. Our roads are paved and it doesn't go off-road.
>
> Maybe I should be trying to sell this and find a used replacement.
>
> jimo

Re: grinding valves on M38 A1 possible?
 

You have an F-134", the F stands for half the valves are in the
block, like the old flat head, and the other half are in the head
(intakes) like an overhead valve engine:
http://www.apple.queensu.ca/CJ3B/Tech/EngineTips.html If you don't ring
it, then hand lap the new valves in place with the grinding compound:
http://www.autopart.com/TOOLS/TOOLSMAIN/tool/T_2219.htm and tool:
http://www.autopart.com/TOOLS/TOOLSMAIN/tool/T_2222.htm
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Marvin Olive wrote:
>
> The camp I work for has a M38 A1 jeep with low compression. The engine runs
> but doesn't have the power to climb our campus roads. We were considering
> new rings to increase compression.
>
> Someone told us that the valves on these were too thin to grind and so
> putting new rings in was a waste of time. Some one else looked at it and
> said the jeep is not a military version although we got it from army surplus
> like 30 years ago. I have the data plate in front of me. It looks like six
> brass plates were mounted to a large metal plate at one time, now there are
> only four brass plates.
>
> Can we grind these valves? Is it better to find another engine to put in, if
> so which one?
>
> We use it as a housekeeping vehicle on camp. We have 9-15% grades and snow
> in the winter. Our roads are paved and it doesn't go off-road.
>
> Maybe I should be trying to sell this and find a used replacement.
>
> jimo